elenestinib   Click here for help

GtoPdb Ligand ID: 12357

Synonyms: BLU-263 | BLU263 | exampl4 4 [WO2020210293A1]
Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: Elenestinib (BLU-263) is a KIT inhibitor that is being developed for potential to treat systemic mastocytosis [1]. It is designed to show selectivity for the gain-of-function mutant KITD816V. Elenestinib has limited ability to cross the blood-brain-barrier (lower penetration capacity than the approved inhibitor avapritinib), so is expected to have a lower risk of central nervous system toxicity.
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the CDK toolkit. All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 9
Hydrogen bond donors 2
Rotatable bonds 7
Topological polar surface area 126.52
Molecular weight 528.25
XLogP 3.5
No. Lipinski's rules broken 0
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

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Canonical SMILES OCCn1ncc(c1)c1cn2c(c1)c(ncn2)N1CCN(CC1)c1ncc(cn1)[C@](c1ccc(cc1)F)(N)C
Isomeric SMILES C[C@](c1ccc(cc1)F)(c1cnc(nc1)N1CCN(CC1)c1ncnn2c1cc(c2)c1cn(nc1)CCO)N
InChI InChI=1S/C27H29FN10O/c1-27(29,21-2-4-23(28)5-3-21)22-14-30-26(31-15-22)36-8-6-35(7-9-36)25-24-12-19(17-38(24)34-18-32-25)20-13-33-37(16-20)10-11-39/h2-5,12-18,39H,6-11,29H2,1H3/t27-/m0/s1
InChI Key IPMARPMXSFFZFG-MHZLTWQESA-N
No information available.
Summary of Clinical Use Click here for help
BLU-263 has been advanced to phase 2/3 clinical evaluation (Feb 2023).
Clinical Trials
Clinical Trial ID Title Type Source Comment References
NCT04910685 (HARBOR) Study to Evaluate Efficacy and Safety of BLU-263 Versus Placebo in Patients With Indolent Systemic Mastocytosis Phase 2/Phase 3 Interventional Blueprint Medicines Corporation
NCT05609942 Study of BLU-263 in Advanced Systemic Mastocytosis (AdvSM) and and Other KIT Altered Hematologic Malignancies Phase 1/Phase 2 Interventional Blueprint Medicines Corporation